Patent GB-1089997-A (GB)
Title: Improvements in and relating to concentrates containing active oxygen
IPC: C11D1/75
Filed: 1964-12-31
Abstract: Detergent compositions comprise liquid aqueous concentrates containing active oxygen, that is aqueous solutions containing 3 to 90% by weight of hydrogen peroxide, and as a stabilizer, a surface-active amine oxide containing 10 to 24 carbon atoms and derived from a tertiary amine that contains one or two saturated alkyl groups containing 6 to 20 carbon atoms, the pH of the concentrate being not more than 10.5.  Preferably the amine contains two alkyl groups each containing one or two carbon atoms and one alkyl group containing 6-20 carbon atoms.  The stabilizer may contain two methyl groups and a dodecyl or tetradecyl group. The amine oxide stabilizer may have the formula <FORM:1089997/C4-C5/1> where R1 is a saturated alkyl group containing from 6 to 20 carbon atoms; R2 is an ethoxy, propoxy or hydroxypropoxy group and R3 is a methyl, ethyl, ethoxy, propoxy, or hydroxypropoxy group or a saturated alkyl group containing from 6 to 20 carbon atoms; the sum of all the carbon atoms in the alkyl groups being at least 10 and preferably 14 to 16.  The pH of the concentrate is preferably greater than 1 and may be in the range 3 to 8.  Hydrogen peroxide may be present in the concentrate in an amount of 10 to 70%, preferably 10 to 40%, by weight and the concentration of the surface-active amine oxide may be 2 to 40%, preferably 5-25%, by weight, or based on the hydrogen peroxide present in free or combined form, the quantity of amine oxide may be 10 to 200%, preferably 30 to 100%, by weight. The composition may contain other stabilizers, and the hydrogen peroxide may be present wholly or partly in the form of its adducts with urea, melamine, alkali metal borates, and alkali metal ortho- or poly-phosphates dissolved or suspended in water.  Amine oxides exemplified are lauryl dimethyl amine oxide, lauryl diethyl amine oxide, myristyl dimethyl amine oxide, myristyl diethyl amine oxide, cetyl dimethyl amine oxide, cetyl diethyl amine oxide, dihexyl ethyl amine oxide, dioctyl methyl amine oxide, the ethyl or methyl in all of these being replaceable by ethoxy, propoxy or dipropyloxy.  The composition may be employed in cleaning and bleaching of textiles, bleaching human hair, permanent waving and other cosmetic treatments.ALSO:Liquid aqueous concentrates containing active oxygen, that is aqueous solutions containing 3 to 90% by weight of hydrogen peroxide, contain as stabilizer a surface-active amine oxide containing 10 to 24 carbon atoms and derived from a tertiary amine that contains one or two saturated alkyl groups containing 6 to 20 carbon atoms, the pH of the concentrate being not more than 10.5. Preferably the amine contains two alkyl groups each containing one or two carbon atoms and one alkyl group containing 6-20 carbon atoms.  The stabilizer may contain two methyl groups and a dodecyl or tetradecyl group.  The amine oxide stabilizer may have the formula <FORM:1089997/C1/1> where R1 is a saturated alkyl group containing from 6 to 20 carbon atoms; R2 is an ethoxy, propoxy or hydroxypropoxy group and R3 is a methyl, ethyl, ethoxy, propoxy, or hydroxy-propoxy group or a saturated alkyl group containing from 6 to 20 carbon atoms; the sum of all the carbon atoms in the alkyl groups being at least 10 and preferably 14 to 16.  The pH of the concentrate is preferably greater than 1 and may be in the range 3 to 8.  Hydrogen peroxide may be present in the concentrate in an amount of 10 to 70% preferably 10 to 40% by weight and the concentration of the surface-active amine oxide may be 2 to 40%, preferably 5-25%, by weight, or based on the hydrogen peroxide present in free or combined form, the quantity of amine oxide may be 10 to 200%, preferably 30 to 100% by weight.  The composition may contain other stabilizers, and the hydrogen peroxide may be present wholly or partly in the form of its adducts with urea, melamine, alkali metal borates, and alkali metal ortho, or polyphosphates, dissolved or suspended in water. Amine oxides exemplified are lauryl dimethyl amine oxide, lauryl diethyl amine oxide, myristyl dimethyl amine oxide, myristyl diethyl amine oxide, cetyl dimethyl amine oxide, cetyl diethyl amine oxide, dihexyl ethyl amine oxide, dioctyl methyl amine oxide, the ethyl or methyl in all of these being replaceable by ethoxy, propoxy or dipropyloxy.  The composition may be employed in cleaning and bleaching of textiles, bleaching human hair, permanent waving and other cosmetic treatments.ALSO:Liquid aqueous concentrates containing active oxygen, that is aqueous solutions containing 3 to 90% by weight of hydrogen peroxide, contain as stabiliser a surface-active amine oxide containing 10 to 24 carbon atoms and derived from a tertiary amine that contains one or two saturated alkyl groups containing 6 to 20 carbon atoms, the pH of the concentrate being not more than 10.5.  Preferably the amine contains two alkyl groups each containing one or two carbon atoms and one alkyl group containing 6-20 carbon atoms.  The stabiliser may contain two methyl groups and a dodecyl or tetradecyl group.  The amine oxide stabiliser may have the formula: <FORM:1089997/D1-D2/1> where R1 is a saturated alkyl group containing from 6 to 20 carbon atoms; R2 is an ethoxy, propoxy or hydroxypropoxy group and R3 is a methyl, ethyl, ethoxy, propoxy, or hydroxypropoxy group or a saturated alkyl group containing from 6 to 20 carbon atoms; the sum of all the carbon atoms in the alkyl groups being at least 10 and preferably 14 to 16.  The pH of the concentrate is preferably greater than 1 and may be in the range 3 to 8.  Hydrogen peroxide may be present in the concentrate in an amount of 10 to 70% preferably 10 to 40% by weight and the concentration of the surface active amine oxide may be 2 to 40% preferably 5-25% by weight, or based on the hydrogen peroxide present in free or combined form, the quantity of amine oxide may be 10 to 200% preferably 30 to 100% by weight.  The composition may contain other stabilisers, and the hydrogen peroxide may be present wholly or partly in the form of its adducts with urea, melamine, alkali metal borates, and alkali metal ortho, or poly-phosphates, dissolved or suspended in water.  Amine oxides exemplified are lauryl dimethyl amine oxide, lauryl diethyl amine oxide, myristyl dimethyl amine oxide, myristyl diethyl amine oxide, cetyl dimethyl amine oxide, cetyl diethyl amine oxide, dihexyl ethyl amine oxide, dioctyl methyl amine oxide, the ethyl or methyl in all of these being replaceable by ethoxy, propoxy or dipropyloxy.  The composition may be employed in cleaning and bleaching of textiles, bleaching human hair, permanent waving and other cosmetic treatments.